Cutting torch



.TURPIN AND 0. B. BROOKMAN.

CUTTING TORCH,

APPLlCATION FILED MAX/16,1921.

J. H. TURPFN AND O. B. BROOKIVIAN.

CUTTING TORCH. APPLICATION FILED MAY 16. 192|.

1,407,306 Patented Feb. 21, 1922.

2 SHEETSSHEET 2.

UNITED ls'rixriss PATENT OFFICE.

JOHN H. TURPIN AND OTTO B. IBROOKMAN, OF BBEMERTON, WASHINGTON.

CUTTING TORCH.

Specification of Letters Patent. Patented Feb. 21, 1922c Application filed May 16, 1921. Serial No. 469,847.

To all whom z't may concern Be it known that we, JOHN H. TURPIN and OT'ro B. BiiooKMAN, citizens of the United States, residing lat Bremerton, in the county of Kitsap and State of Vashington, have invented certain new and useful Improvements'in Cutting Torches, of which the, following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in cutting torches, and it is an object of the invention to provide a device of this general character with novel and improved means whereby the same may be-.employed in connection with subaqueous work.

Another object of the inventionis to provide a torch of this general character wherein the tip has associated therewith' a jacket providing means whereby, during a4 subaqueous operation, a pressure may be created suilicient to maintain the water displaced from the tip.

It is also an object of the invention to provide a device of `this general character with novel and improved means whereby he mixture discharged from the burner tip may be readily ignited and particularly when said tip is in submergence.

An additional object of the invention is to provide a device of this general character including a needle valve'or the like operable to regulate the flow of the heating oxygen independently of the cutting oxygen and with which Valve is associated novel and improved means whereby the saine may be adjusted with exacl'jitude.

The invention consists in thevdetails ofconstruction and in the combination and arrangement of the several parts of our improved cutting torch whereby certain important advanta es are attained and the de- 'vicerendered simpler, less expensive andy otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of our invention will hereinafter be definitely claimed.

In order that our invention may be the better understood, we will now proceed to describe the saine with reference to the accompanying drawings, wherein:

Figure 'l is a view in top plan'of a cutting torch constructed in accordance with an embodiment of our invention with the conductor wires omitted;

Figure 2 is a view in side elevationl of the structure as illustrated in Figure 1 with the .conductor wires applied;

Flgure 3 is an enlarged fragmentary view partly in section and partly in elevation showing the contact arms in position to ignite the torch;

Figure 4 is a view in elevation of the end portion of the contact arm carrying the contact;

Figure 5 is a cross sectional view taken through one of the contact arms;

Figure 6 is a sectional view taken through the burner and tip;

Figure 7 is a sectional View taken substantially on the line 7-7 of Figure 6; t Figure 8 is an enlarged fragmentary view illustrating in detail the valve actuating mechanism carried by the handle or casing ofthe torch;

Figure 9 is an enlarged transverse sectional view illustrating in detail the mountings for the contact arms;

Figure 10 is a sectional view taken substantially on the line 10J-41() of Figure 6.

As disclosed in the accompanying drawings, 1 denotes the casing or handle of a cutting torch of a type now generally in use, the rear end portionof which is provided with a connection block 2. The forward or opposite end portion of the casing or handle l has extending therefrom the pipes 3, 4 and 5 leading to a head 6 in which is socketed a burner B. The pipe'B is for cutting oxygen, the pipe 4 for heating oxygen,- and .the pipe 5 for the requisite combustible gas which may be either acetylene or hydrogen.

7 denotes the external head 4of a needle valve operating in a known manner to regulate the flow of heating oxygen independently of the cutting oxygen. In order that this valve may be adjusted to effect the desired regulation with exactitude, said head 7 has radiating therefrom an arm 8. Engageable with the free end portion of said arm 8 is a shank or screw 9 threaded through an outstanding post or standard 1() brazed or otherwise secured to the casected with an exactitude which could not be obtained by a direct engagement by an operator with the head.

Associated with the burner B is a tip T comprising an outer sleeve 11 tapered t0- Ward its outer or working end and which is provided at its opposite end with a socket 12 in which threads the outer portion of the burner B, the periphery of said socketed portion of the sleeve 11 being angular in cross section to provide a nut head 14 With Which a suitable implement is adapted to be engaged in order to facilitate the application or removal of the tip T with respect to the burner B.

The upper portion a of the bore of the sleeve 11 is enlarged to provide a chamber a, defined at its bam by an internal shoulder 1 5. Fitting within the enlarged portion or chamber a is an annular member or ring 16 which abuts the shoulder 15 and provides means wherebyis positively limited the insertion of the outer end of the burner B within the cooperating end portion of the tip T..A

The outer portion ofthe bore of the sleeve 11 is tapered, said tapered portion extending along `the major portion of the sleeve, and said tapered portion. is provided with a plurality of circumferentially spaced grooves or channels 17 open at their opposite ends and which, in the completed or assembled tip, provides orifices through which the heating mixture passes.,

Snugly fitting within the tapered portion Z1 of the bore oi the sleeve 11 is the inner tip 18, the outer end. portionof which is substantially 'dush with the adjacent end of the tip sleeve 11. The applied inner tip 18 closes the longitudinal open faces of the grooves or `channels 17 whereby the requisite orifices are obtained.

The inner portion c of the inner tip 18 depends through the enlarged portion of the mixing chamber a and the central portion of the outer end of the burner B has close contact with the end of said portion c so that the bore of the inner tip 18 constitutes a continuation for the flow of the cutting oxygen.

The inner portion. d of the bore of the inner tip 18 is gradually reduced in diameter or tapered to a point in relatively close proximity to the outer or Working end of said inner tip while the forward or remaining portion e of said bore is of an unchanging diameter., By this formation of the bore of the inner tip 18, the cutting oxygen is ejected with a maximum of force and whereby the eiiciency of the torch is materially increased.

Our improved torch. is particularly adapted for use in connection with subaqueous operations and for which reason means must be provided whereby a pressure may be created sufficient to maintain the Water displaced from the tip T. ln the present embodiment of our invention, a jacket 19 surrounds in predetermined spaced relation the' portion of the tip sleeve 11 in advance of the nut head 14, the inner end of the jacket bein provided with an. inwardly directed contlnuous {iange 20 which contacts with the periphery of the sleeve 11 immediately adjacent the head 14 and `which flange is brazed or otherwise secured to the tip sleeve 11. The opposite end portion of the jacket 19 extends slightly beyond the working or discharge end of the inner tip 18 with said extended portion of the jacket at diametrically opposed points recessedv or cut away, as at 2l. l

In communication with the chamber 22 afforded by the space between the periphery of the tip sleeve 11 and the applied jacket 19 and at a. point adjacent the inner or closed end of said jacket is the tube 23, the end portion of said tube in communication with the chamber 22 being brazed or otherwise secured to the jacket 19. The portion 23a of the tube immediately .adjacent the burner B is disposed on substantially an V'S curve in a direction toward the pipes "3, 4

' and 5 and from this portion 23, the tube 23 extends rearwardly of said pipes and along the casing or handle 1, said tube 23 being held to the casing or handle l by the fastening Wires 24.

The rear 4or free end portion of the tube 23 is provided with a fitting 25 adapted to be coupled to a suitable air line, the pressure of the air,l in practice forced through the tube 23, being preferably substantially one hundred and five pounds. This pressure within the jacket 19 is suilicient to displace the Water at the outer or working end of the tip T so that our improved torch can be employed with facility in connection with subaqueous operations.

Overlying the opposite side portions of the pipes 3,4 and 5 are' the plates 26, said plates being clamped in applied aosition through the instrumentality of the threaded Shanks or screws 27. The inner face of eac-h of the plates 26 is provided with the'grooves or channels 28. to receive the adjacent portions of the pipes 3, 4 and 5 and also the tube 23 so that, when the plates 26 are clamped in applied position, no injury is im. posed upon said elements 3, 4, 5 and 23.

Each of the plates 26 has extending outwardly therefrom a pair of flanges 29 and 30 substantially in parallelism and disposed on a downward incline in a direction toward the head 6 or inclined in a direction toward the tip T.

(loacting with each. pair of flanges 29 and 30 is a contact arm 31 preferably fox-med of a canvas compound and one end portion 31 of said arm is singularly disposed and substantially snugly fits between the lan es 29 and 30, said yportion 31a being insertib e between the Hanges 29l and 30 at either` end in accordance with the particular position in which it is applied. In order to facilitate this fitting of the portion 31a`between the Iianges 29 and 30, the opposite end portions 29a of the flange 29 are beveled.

The opposite end portion 31b of each of the arms 31 is angularly disposed in a direction opposite to the portion 31L and extending laterally therefrom is a contactI member 32. In electrical connection with the contact member 32 is a conductor 33 extending through a passageway or bore produced in the contact arm 31 and which passageway or bore at its inner end o ens at a point adjacent the portion 31a. he conductor 33 extends through said open end of the passageway orbore and is continued through s the cable 34, said cable being adapted -for connection with a suitable source of electrical energy and which cable is also held or tied to the casing or handle member 1 by the fastening wires 24 hereinbefore referred to so that said cable will offer no hindrance or obstruction to the requisite manipulation of the torch.

In Figures 1 and 2 of the drawings only one of the contact arms 31 is shownswung back rearwardly although in practice both of the arms are adapted to be positioned, when the torch' is in use, so that the same will be out of the way.

When it is desired to ignite the torch, the arms are lboth swung forwardly into the position illustrated in Figure 3 and the outer 'extremities thereof are pressed inwardly to bring the contact members 32 into en agement to close a circuit. The free en portions of these arms 31 are then permitted to separate, the requisite spark y for igniting the combustible gas occurring when the contact of these members 32 is broken. The recess or cut away portions 21 of the jacket 19 acilitates the desired contact of the mem ers l32. The desiredseparation of the contact members 32 ismaterially facilitatedby the spring 36 to be hereinafter referred to. g

The conductors 33 and the cable 34 are water-proof but as this in itself forms no particular part of our invention, a detailed description and illustration are believed to be unnecessary as such conductors vand cable comprise a well known commercial product.

Each of the contact arms 31 is held in applied osition through the medium 'of a pin '35 disposed through registering open ings in the coacting anges 29 and 30 and the portion 31 of the arm 31 interposed between said an s. A flat spring 36 also bears against sai ortion 31, said sprin extending between t e anges 29 and 30 an having one end portion anchored, as at 37,

to a plate 26.

The discharge end of the jacket 19 at the adjacent end of the tip T is provided with the inwardly directed continuous flange 38, the inner or free margin of which is spaced from the tip T. This iange facilitates the requisite discharge of the air under pressure from within the jacket 19 and whereby the functioning of the torch in subaqueous work is materially facilitated.

^ The outer ends of the grooves or channels 17 communicate with an angular recess 17 produced in the wall of the bore of the sleeve 11 at its outer end, said recess 17 being gradually increased in diameter from its outer end to its inner end. In practice it is preferred that the outer end of the recess be approximately .023 inches in depth and at its inner end approximately@ of an inch in dep-th.

From the foregoing description it is thought to4 be obvious that a cutting torch constructed in accordance with our invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that our invention is susce tible of some change and modification wit out departing from the principles and spirit thereof and for this reason we do not wish to be understood as limiting ourselves to the precise arrangement and formation of the several parts herein shown in carrying out our invention in practice except as hereinafter claimed.

We claim:

1. Ina cutting torchzincluding. a burner, a tip sleeve secu-red to the discharging end portion of the burner, the bore of said sleeve 7105 being tapered, the wall of said bore being provided therealong With grooves open at their ends, an inner tip snugly fitting within the tapered portion of the bore of the tip sleeve and closing the open faces of the grooves, whereby orifices are provided, the inner portion of the inner tip contacting with the adjacent end of the burner, the bore of the inner tip being substantially in continuity with the conduit in the burner for the cutting oxygen, the end portion of the bore of the tip sleeve adjacent the burner being enlarged to provide a chamber, the adjacent end of the burner extending within said chamber, and means within the chamber for limiting the extent of the insertion of the burner within the chamber.

. 2. In a cutting torch including a handle, a head, pipes for the gases connecting the handle and the head, a burner associated with the head, contact arms carried by the pipes,

one of said contact arms terminating ad` with a contact, and conductors for each of' the contacts extending through the contact arms.

3. In a cutting torch including a handle, a head, pipes for the gases lconnecting the handle and head, a burner associated with the head, plates arranged at opposite sides of the pipes, each ofsaid plates being provided with a pair of outstandingianges, a contact arm coacting with each of the plates, the opposite end portions of the contact arm being angularly disposed in opposite directions, a contact carried by one of the angular extremities, the opposite angular portion fitting between a pair of flanges of a plate, and means coacting with said flanges and coacting angular extremity of an arm to hold the arm against displacement.

4. In a cutting torch including a handle, a head, pipes for the gases connecting the handle and head, a burner 4associated with the head, plates arranged at opposite sides of the pipes, each of said plates being provided with a pair of outstanding flanges, a contact arm coacting with each of the plates', the opposite end portions of the contact arm being angularly disposed in opposite directions, a contact carried by one of the angular extremities, the opposite angular portion iitting between a pair of flanges of a plate, and a holding pin disposed between the pair of flanges and the extremity of the contact arm inserted therebetween.

In a cutting torch including a handle, a head, pipes for the gases connecting the handle and head, a burner associated with the head, plates arranged at opposite sides of the pipes, each of said plates being provided with a pair of outstanding ilanges, a contact arm coacting with each or the plates,

the opposite. end portions of the contact arm.-

being angularly disposed in opposite directions, a contact carried by one of the angular extremities, the opposite angular portion fitting between a pair of flanges of a plate, a holding pin disposed between .the pair ot langes and the extremity of the contact arm inserted therebetween, and a spring member carried by the plate and bearing against the contact arm. y

6. In a cutting torchincluding a burner and a tip `for the burner, a jacket carried for connection with a suitable source of fluid v under pressure, a contact arranged in close proximity to the openend portion of the jacket, a second Contact in engagement with the tube, and an electrical conductor leading from each of the contacts, said conductors being adapted for communication with a suitable source of electrical energy.

7. In combination with a cutting torch including a burner, a pair of contact arms pivotally engaged with the torch, a contact member carried by each of the arms, said contact member being positioned adjacent the discharge end of the burner when the arm is swung in one direction, and an electrical conductor leading from each of the contact members and adapted for connection with a suitable source of electrical lenergy.

8. In combination with a cutting torch including `a burner, a pair of contactarme pivotally engaged with the torch, a contact member carried by each of the arms, said contact member being positioned adjacent the discharge end of the burner when the a-rm is swung in one direction, and an electrical conductor leading from each of the contact members and adapted for connection with a suitable source of electrical energy, each of saidv contact members being provided with a bore extending therealong and opening through a side thereof, the coacting conductor being disposed through said bore.

9. In combination with a cutting` torch including a burner, a pair of contact members carried by the torch for swinging movement, each of said contact members be ing positioned adjacent the discharge end of the burner when said contact member is swung in one direction, and means for connecting each ofthe contact members with a source of electrical energy.

In testimony whereof we hereunto ailix our signatures.

JOHN H. TURPIN. OTTO B. BROOKMAN. 

